diff --git a/tools/internal_test.py b/tools/internal_test.py
index 22f8b56..e730ea6 100755
--- a/tools/internal_test.py
+++ b/tools/internal_test.py
@@ -149,8 +149,9 @@
   with open(sys.argv[0], 'r') as us:
     contents.append(us.read())
   for app_data in BENCHMARK_APPS:
-    with open(app_data.__file__, 'r') as us:
-      contents.append(us.read())
+    if os.path.exists(app_data.__file__):
+      with open(app_data.__file__, 'r') as us:
+        contents.append(us.read())
   return contents
 
 def restart_if_new_version(original_contents):